R help - Dec 2007 - Number of ways to select population members

Hi all,
   
  Suppose I have a population of 3 alphabets : A, B, C. From this population,
number of ways that any 2 can be chosen is 3 i.e. AB, AC, and BC.
   
  Is there any R function to generalize this process, for any number of
alphabets/numbers and for any sub-sample size?
   
  Thanks and regards,
   

       
---------------------------------

	[[alternative HTML version deleted]]

try something like this:

combn(LETTERS[1:3], 2, paste, collapse = "")


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Megh Dal" <megh700004 at yahoo.com>
To: <r-help at stat.math.ethz.ch>
Sent: Thursday, December 13, 2007 1:30 PM
Subject: [R] Number of ways to select population members

> Hi all,
>
>  Suppose I have a population of 3 alphabets : A, B, C. From this 
> population, number of ways that any 2 can be chosen is 3 i.e. AB, 
> AC, and BC.
>
>  Is there any R function to generalize this process, for any number 
> of alphabets/numbers and for any sub-sample size?
>
>  Thanks and regards,
>
>
>
> ---------------------------------
>
> [[alternative HTML version deleted]]
>
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> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 

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